CN102704911B - A kind of multilateral well experimental model, system and back-up sand method - Google Patents
A kind of multilateral well experimental model, system and back-up sand method Download PDFInfo
- Publication number
- CN102704911B CN102704911B CN201210180178.XA CN201210180178A CN102704911B CN 102704911 B CN102704911 B CN 102704911B CN 201210180178 A CN201210180178 A CN 201210180178A CN 102704911 B CN102704911 B CN 102704911B
- Authority
- CN
- China
- Prior art keywords
- experimental model
- multilateral well
- model
- well
- multilateral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004576 sand Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 112
- 238000002474 experimental method Methods 0.000 claims abstract description 32
- 238000009826 distribution Methods 0.000 claims abstract description 25
- 239000003822 epoxy resin Substances 0.000 claims description 26
- 229920000647 polyepoxide Polymers 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 21
- 238000000576 coating method Methods 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 19
- 239000011347 resin Substances 0.000 claims description 19
- 239000004927 clay Substances 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 6
- 230000035699 permeability Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 238000009827 uniform distribution Methods 0.000 claims 1
- 238000004088 simulation Methods 0.000 abstract description 32
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000003129 oil well Substances 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 47
- 230000008569 process Effects 0.000 description 25
- 239000000203 mixture Substances 0.000 description 12
- 238000013459 approach Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 7
- 229920006395 saturated elastomer Polymers 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002775 capsule Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000008398 formation water Substances 0.000 description 3
- 230000002175 menstrual effect Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000004936 stimulating effect Effects 0.000 description 3
- 230000005514 two-phase flow Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 210000005239 tubule Anatomy 0.000 description 2
- 238000010200 validation analysis Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The present invention is about a kind of multilateral well experimental model, system and back-up sand method, experiment sand is filled on the top of described multilateral well experimental model, the bottom of described experimental model is used for simulating bottom water, it is provided with a bottom water diffuser plate between described two parts up and down, between described bottom water diffuser plate and top, is provided with warp layer net.A kind of multilateral well experimental model that the embodiment of the present invention provides, effectively simulate oil reservoir, limit, bottom water are on multilateral well production capacity and the impact of nearly well pressure field distribution, make simulation closer to multiple different boundary such as the bottom water in true reservoir media, Bian Shui, closings, thus obtain the impact on oil well productivity of the different boundary conditions.
Description
Technical field
The present invention is about multilateral well physical simulation techniques field, especially with respect to multilateral well dynamic 3 D physical simulation techniques field, specifically about a kind of multilateral well experimental model, system and back-up sand method.
Background technology
Multilateral well refers to that hole angle reaches or close to 90 °, well bore creeps into the well of certain length along horizontal direction.The well of multilateral well is a horizontal-extending considerably long segment length in oil reservoir, and sometimes for the needs that certain is special, hole angle can be more than 90 °.In general, multilateral well is applicable to thin oil-gas Layer or fractured reservoirs, it is therefore intended that increase the bare area of oil-gas Layer.
Multilateral well physical simulation techniques is to utilize the experimental provision in laboratory to simulate the physical simulation experiment technology of multilateral well oil reservoir truth, multilateral well physical simulation techniques can be in the physical phenomenon in testing indoor observation multilateral well oil reservoir recovery process, quiet, the dynamic parameter of test oil reservoir, analyze multilateral well seepage flow characteristics, mechanism of oil displacement, contrast and preferred injection-production technology.
In multilateral well physical simulation techniques, multilateral well physical model is the basis of multilateral well physical simulation experiment.According to different research purposes, multilateral well physical model can be divided into two big classes, i.e. Basic Mechanism study model and scale model.The former can not to scale (NTS) manufacture, can simulate a unit or a process, the mechanism of research physical phenomenon, be given and recognize qualitatively；The latter then designs according to the principle of similitude, geometric similarity to be met, kinematic similitude and dynamic similarity between model and prototype in principle, and experimental implementation, data process and the application of experimental result will complete under the guidance of the theory of similarity.At present, multilateral well physical modeling's model both domestic and external and experiment, can be divided mainly into following four classes: Static Electro analogue model and experiment, dynamic one-dimensional physical modeling's model and experiment, Dynamic Two-dimensional physical modeling's model and experiment and dynamic 3 D physical modeling's model and experiment.
Multilateral well dynamic 3 D physical modeling is compared with electrical analogue, one-dimensional physical modeling, two-dimensional physical simulation, there is significant advantage, it can reflect reality the dynamic change of oil reservoir more really, complicated geological feature can be simulated, complicated well-completing process, multilateral well Production development under complicated mining type, is the important means of multilateral well withdrawal mechanism research.Compared with dynamic physical model one-dimensional, two-dimentional, the most only 3 d scale model can realize carrying out all multiparameters controlling physical process comprehensive and quantitative analysis, thus proposes to predict more accurately to down-hole oil reservoir development trend, and the above two are more focused on qualitative investigation.
In prior art, multilateral well three-dimensional physical simulation assay device has three dimensions, and it is the angle simulating reality multilateral well oil reservoir from space.Relevant multilateral well dynamic 3 D physical modeling, Chinese scholars has done the research of a lot of this respect.At present, threedimensional model is broadly divided into the scale model designed in proportion and the non-model designed in proportion, the former research and apply more, the comparative maturity also developed.
Dynamic 3 D scale model is typically for the scene concrete DP technology of concrete oil reservoir, the theory of similarity instruct and design in proportion.What is called designs in proportion, it is simply that refer to, in laboratory scale, according to a set of similarity criterion scaled size, prototype oil field is made physical model.Generally geology reservoir is different, and the emphasis of simulation study is different, and the similarity criterion setting up model foundation is the most different.
But, compared with first three analog, multilateral well three-dimensional physical simulation device has a disadvantage in that bulky, structure is complicated, cost intensive, experiment flow is complicated loaded down with trivial details and must debug in advance, and provisioned various temperature, pressure, flow transducer not only quantity is many but also requires height.
Fig. 1 is an experimental provision schematic diagram in prior art, as it is shown in figure 1, experimental provision uses hydraulic pressurization simulated formation burden pressure；Upper part simulation oil reservoir, lower part simulation bottom water, separate with bottom water diffuser screen between two parts, the equipotential surface under simulation infinite fluid diversion state；Have employed the stainless steel capillary of external diameter 3mm internal diameter 1.5mm in blood circulation, during to the flow velocity that model offer is little, fluid can consume the biggest flow resistance by capillary tube, makes model obtain stable small pressure feed.Ray method measures the principle of bottom water lifting height, the position that ray raises, and water level raises.Owing to during profit saturation difference, model is different to the degree of ray attenuation, so according to the change of the fuel-displaced water saturation of transmitted intensity measure of the change in the plane, and can go out, by formula to calculating, the height that bottom water rises.
In the experimental provision shown in Fig. 1, oil reservoir macroscopic view homogenizing in model；Initial water layer and oil reservoir are clearly distinguished；In development process, water is entirely from bottom water, boundless water.But owing to this technology have employed radioactive source to judge the change of profit saturation and bottom water lifting height, therefore there are the following problems: can not simulating reality oil reservoir completely.The only pressure of inlet with gauge measurement, it is impossible to monitoring multilateral well nearly well pressure field distribution, and then can not judge the inflow profile of varying level section, thus can not simulating reality oil reservoir completely；There is potential safety hazard.Have employed radioactive source to judge profit saturation change and bottom water lifting height, this needs the most sound protective measure and working specification, once misoperation, it will cause the most serious consequence；Data acquisition not science.Gathering data mode is artificial collection, when multilateral well starts water breakthrough, needs to be spaced a comparatively short data on flows of time reading, and workload is bigger；Multilateral well well type is single.Only simulating branchiess multilateral well exploitation bottom water reservoir, without reference to multilateral well, well type is single.
Fig. 2, Fig. 3 are physical model schematic diagram and the experiment process figure of an experimental provision in prior art respectively, as shown in Figure 2 and Figure 3, and the physical model a size of 30cm × 25cm × 5cm of closed boundary low-permeability oil deposit multilateral well level pressure Mining Test flow process.First the physical model leak test will made, in the case of guaranteeing to there is not leakage, evacuation saturated formation water, with high-precision measuring infusion formation water displacement physical model, it is allowed to add certain pressure by the formation water in compact model, this test pressurization 0.235MPa.Calibrating (base measuring) pressure sensor, logging and electronic balance, and logging and electronic balance holding wire are connected on computer, so that the automatic collection of test data.
Analogue technique shown in Fig. 2, Fig. 3 uses hyposmosis natural sandstone to appear, and be packaged with resin, although meeting the requirement of low-permeability, but due to the particularity of its physical model and the dispersibility of measuring point, this technology is caused to there is also following shortcoming: oil reservoir can not be accurately reflected.This technology relatively the first technology has had great progress in terms of monitoring reservoir pressure distribution, have employed 15 measuring point monitoring pressure field distributions, but owing to measuring point excessively disperses, final pressure profile is not accurate enough；The situation in the presence of bottom water, limit water can not be simulated.Appear owing to using hyposmosis natural sandstone, and encapsulated with resin, closed boundary can only be simulated, it is impossible to simulation limit, bottom water；Multilateral well well type is single.
In general, in prior art, there are the following problems for dynamic 3 D scale model:
The back-up sand experiment of prior art can only be to multiple-limb well capacity and go out liquid rule over time and carry out physical modeling, it is impossible to the pressure field distribution of the internal nearly well of measurement model, it is impossible to reflect the Pressure Variation of oil reservoir in whole recovery process more truly；
In the multilateral well back-up sand experiment of prior art, the border that can simulate only has bottom water boundary, it is impossible to simulation limit water boundaries；
In the multilateral well back-up sand experiment of prior art, the multilateral well production capacity not having branch can only be simulated, it is impossible to multilateral well production capacity is simulated；
In the multilateral well back-up sand experiment of prior art, the collection of data mostly is artificial collection, the most artificial or by computer disposal, such result causes inefficiency, error to increase often；
The displacement process of the multilateral well back-up sand experiment of prior art there will be " water breakthrough " phenomenon, make moisture content steeply rise；
In prior art, manual method is difficult to make the sandpack column of low-permeability.
Summary of the invention
For overcoming multilateral well three-dimensional physical simulation device present in prior art can not simulate limit, bottom water；Multilateral well well type is single and the problem of water breakthrough, the present invention can be occurred in displacement process to provide a kind of multilateral well experimental model, system and back-up sand method.
The present invention provides a kind of multilateral well experimental model, experiment sand is filled on the top of described multilateral well experimental model, the bottom of described experimental model is used for filling bottom water, it is provided with a bottom water diffuser plate between described two parts up and down, between described bottom water diffuser plate and top, is provided with warp layer net.
The present invention also provides for a kind of multilateral well experimental system, and described multilateral well experimental system includes:
Multilateral well experimental model；
Pressure sensor device, is connected with described experimental model, the pressure of diverse location in sensing experimental model, generates voltage signal；
Data processing equipment, is connected with described pressure sensor device, is used for receiving voltage signal, generates analog result data.
The present invention also provides for a kind of multilateral well experimental model limit Fluid Dynamics device, described limit Fluid Dynamics device is arranged on the inwall of described experimental model, described limit Fluid Dynamics device is the ring pipe of parcel gauze, a diameter of 4mm of described ring pipe, on described ring pipe all be dispersed with multiple apopore, a diameter of 0.5mm of described apopore.
The present invention also provides for a kind of multilateral well experimental model back-up sand method, it is characterised in that described back-up sand method comprises the following steps:
Fine sand is mixed homogeneously according to the ratio of 4: 1 with clay；
The dry method filled out is used to insert in experimental model by mixed fine sand and clay mixture and be compacted；
Described experimental model is filled to water saturation；
Use white oil saturated to oil to described experimental model expelling water.
The present invention also provides for a kind of multilateral well experimental model anti-water breakthrough coating, it is characterized in that, described anti-water breakthrough coating is covered on the internal face of described multilateral well experimental model, described anti-water breakthrough coating is mixed by low molecule pa resin and epoxy resin, and described low molecule pa resin and the ratio of epoxy resin are 3: 5.
The present invention also provides for a kind of multilateral well experimental model anti-water breakthrough method, it is characterised in that described method comprises the following steps:
By low molecule pa resin and epoxy resin according to 3: 5 ratio mix homogeneously；
Mixed low molecule pa resin and epoxy resin composition are applied on the internal face of experimental model, form anti-water breakthrough coating；
One layer of fine sand of surface uniform fold in described anti-water breakthrough coating；
The anti-water breakthrough coating covering fine sand is dried.
A kind of multilateral well experimental model, system and the back-up sand method that the embodiment of the present invention provides, has the advantage that
Effectively simulating oil reservoir, use pressure capsule system to be successfully realized the real-time measurement of multilateral well nearly well pressure field distribution, the pressure distribution recorded is more accurate.For studying the pressure field distribution around multilateral well, thus explore bottom water coning position and delay the approaches and methods of bottom water coning, and providing foundation for science exploitation multilateral well bottom water reservoir.
Effectively simulate limit, bottom water to multilateral well production capacity and the impact of nearly well pressure field distribution, make simulation closer to multiple different boundary such as the bottom water in true reservoir media, Bian Shui, closings, thus obtain the impact on oil well productivity of the different boundary conditions.
Effectively simulate multiple-limb, many well type multiple-limb well capacity and enter well pressure field distribution, being appreciated that multilateral well is exploited the impact of different boundary oil reservoir by the geometrical factor of multilateral well, provide theoretical foundation for multilateral well well type optimization.
Data processing equipment is used to dock with pressure sensor device, can be with timely monitor model inside measuring point pressure；Show nearly well pressure field pattern, and real-time snap shot；Gather the data Auto-Memory obtained.The process of the nearly well pressure data to multilateral well of stimulating the menstrual flow obtains its nearly well pressure scattergram, and then obtains oil-water two-phase flow rule and rule of waterflooding.Substantially increasing conventional efficient, for later larger logistics organizations, the simulation of more complicated reservoir condition is had laid a good foundation.
Effectively prevent " water breakthrough ", and use special back-up sand and saturation process to make the sandpack column of relatively low-permeability, make simulation more approach oil reservoir truth, the success for experiment is laid a good foundation.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, is not intended that limitation of the invention.In the accompanying drawings:
Fig. 1 is an experimental provision schematic diagram in prior art.
Fig. 2 is a physical model schematic diagram in prior art.
Fig. 3 is an experiment process schematic diagram in prior art.
Fig. 4 is the structure chart of a kind of multilateral well experimental model that the embodiment of the present invention provides.
Fig. 5 is the structure chart of a kind of multilateral well experimental model that the embodiment of the present invention provides.
Fig. 6 is the multilateral well model well type design drawing that the embodiment of the present invention provides.
Fig. 7 is the experimental model profile that the embodiment of the present invention provides.
Fig. 8 is a kind of multilateral well experimental system structure chart that the embodiment of the present invention provides.
Fig. 9 is a kind of pressure sensor device structure chart that the embodiment of the present invention provides.
Figure 10 is a kind of multilateral well experimental model back-up sand method flow diagram that the embodiment of the present invention provides.
Figure 11 is a kind of multilateral well experimental model anti-water breakthrough method flow diagram that the embodiment of the present invention provides.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in further details.Here, the exemplary embodiment of the present invention and explanation thereof are used for explaining the present invention, but not as a limitation of the invention.
The embodiment of the present invention provides a kind of multilateral well experimental model, system and back-up sand method, and below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment one
Fig. 4 is the structure chart of a kind of multilateral well experimental model that the embodiment of the present invention provides, as shown in Figure 4, experiment sand is filled on the top 401 of multilateral well experimental model 400, the bottom 402 of described experimental model is used for filling bottom water, it is provided with a bottom water diffuser plate 403 between described two parts up and down, between described bottom water diffuser plate and top, is provided with warp layer net (not shown).
In embodiments of the present invention, multilateral well experimental model 400 can be a square container, can bear the high pressure of 12MPa inside it.Multilateral well experimental model is divided into upper and lower two parts, top 401 back-up sand simulation oil reservoir, bottom water is simulated in bottom 402, separate with bottom water diffuser plate 403 between two parts, bottom water diffuser plate 403 bedding warp layer net above, in order to prevent the sand on top from dropping to bottom, and simulate equipotential surface, the state of infinite fluid diversion.
In embodiments of the present invention, the experiment sand that top 401 is filled is made into simulated formation by fine sand (200 mesh) and clay mixing, and the fine sand of different proportion can get different permeabilities from the mixture of clay.In this technique, being 4: 1 through lot of experiment validation fine sand and clay optimum mixture ratio example, the permeability of experiment sand is 33 × 10-3μm2。
In experimentation, first have to a fine sand mix homogeneously according to optimal proportion with clay, then use the dry method filled out to carry out back-up sand, after back-up sand, carry out the work of saturation water, saturated to oil with white oil (when 25 DEG C, white oil viscosity the is 115mp s) driven water-replacing of particular viscosity the most again.The method utilize clay water-swellable performance can the sandpack column of relatively low-permeability, and saturated oils method can form irreducible water, more approximates true oil reservoir.
In embodiments of the present invention, experimental model internal face is coated with an anti-water breakthrough coating, anti-water breakthrough coating is mixed by low molecule pa resin and epoxy resin, and described low molecule pa resin and the ratio of epoxy resin are 3: 5, and the surface of anti-water breakthrough coating can cover one layer of fine sand.
Fig. 7 be the embodiment of the present invention provide experimental model profile, as it is shown in fig. 7, due to the smooth meeting of model wall cause water in displacement process prolong hydraulically smooth surface alter into, make multilateral well shift to an earlier date water breakthrough, moisture content steeply rises, and have impact on experimental result.Therefore in view of the impact of " water breakthrough ", use epoxy resin that hydraulically smooth surface is processed, increase the roughness of wall.First allocate epoxy resin, low molecule pa resin and epoxy resin are mixed in proportion at 3: 5.Then hydraulically smooth surface is carried out uniform application, then covers fine sand on its surface, finally carry out drying and processing, to increase the roughness of wall.(noting: the allotment of epoxy resin, the process of smearing need band canister respirator).
Fig. 5 is the structure chart of a kind of multilateral well experimental model that the embodiment of the present invention provides, as it is shown in figure 5, be with experimental model 400 difference shown in Fig. 4, the inwall of experimental model 500 is provided with multiple limits Fluid Dynamics unit 404.
In embodiments of the present invention, the internal face of experimental model 500 is provided with two each and every one limit Fluid Dynamics unit 404, limit Fluid Dynamics unit 404 is the bored tube of annular, wherein aperture is uniformly distributed, tubule surface parcel gauze, the diameter of ring pipe can be 4mm, and the diameter of apopore can be 0.5mm.In experimentation, can be with opposite side Fluid Dynamics unit 404 water filling, it is ensured that the uniform water outlet of each aperture, thus realize simulating limit water.
In embodiments of the present invention, as it is shown in figure 5, be provided with a multilateral well model 405 in the top 401 of experimental model 500, multilateral well model 405 is positioned at above probe at about 2cm, and toe-end is away from model inwall 5cm, and heel end is connected with wall.
Fig. 6 is the multilateral well model well type design drawing that the embodiment of the present invention provides, as shown in Figure 6, multilateral well model is multilateral well model, including main hole and at least one branch, can also Shi Liang branch, three branches or four branches, branch can be distributed in homonymy or the heteropleural of main hole, it is also possible to same (different) side continuous distribution, together (different) side are spaced apart and symmetrical.Each branch can be 15 °, 30 °, 45 °, 60 °, 75 ° or 90 ° with the angle of main hole.
A kind of multilateral well experimental model that the embodiment of the present invention provides, effectively simulate oil reservoir, limit, bottom water are on multilateral well production capacity and the impact of nearly well pressure field distribution, make simulation closer to multiple different boundary such as the bottom water in true reservoir media, Bian Shui, closings, thus obtain the impact on oil well productivity of the different boundary conditions.
Effectively simulate multiple-limb, many well type multiple-limb well capacity and enter well pressure field distribution, being appreciated that multilateral well is exploited the impact of different boundary oil reservoir by the geometrical factor of multilateral well, provide theoretical foundation for multilateral well well type optimization.
Effectively prevent " water breakthrough ", and use special back-up sand and saturation process to make the sandpack column of relatively low-permeability, make simulation more approach oil reservoir truth, the success for experiment is laid a good foundation.
Embodiment two
Fig. 8 is a kind of multilateral well experimental system structure chart that the embodiment of the present invention provides, and as shown in Figure 8, multilateral well experimental system 800 includes:
Multilateral well experimental model 801, in embodiments of the present invention, multilateral well experimental model 801 can be the multilateral well experimental model 400 or 500 described in embodiment one.
Pressure sensor device 802, is connected with multilateral well experimental model 801, the pressure of diverse location in sensing multilateral well experimental model 801, generates voltage signal.
Data processing equipment 803, is connected with pressure sensor device 802, is used for receiving voltage signal, generates analog result data.In embodiments of the present invention, data processing equipment 803 can receive the voltage signal that pressure sensor device 802 transmits, and voltage signal is converted into pressure and shows, the data of all acquisitions can Auto-Memory, it is simple to post processing.
In embodiments of the present invention, multilateral well experimental system has introduced " multilateral well nearly well flow simulating software system ", it is achieved the acquisition process of data.This system include operating system, data show, real-time curve, data readback, curve playback, six parts such as proving operation.The major function of operating system is to beat serial ports between opening/closing and sensor, it is achieved the transmission of signal, conversion, and the voltage signal of reception is automatically converted to pressure signal；Data display unit major function is to show the real time data of collection, pressure distribution and voltage signal；Real-time curve part mainly shows the pressure history of each measuring point in whole experimentation；Data readback and curve playback section major function are that the data gathered, image are carried out preservation process；The Main Function of proving operation determines that the transformational relation between voltage signal and pressure signal, it is achieved the automatic conversion between signal.
Fig. 9 is a kind of pressure sensor device structure chart that the embodiment of the present invention provides, as it is shown in figure 9, pressure sensor device 802 may include that
Pressure sensing cells 901, the pressure signal of diverse location in gathering experimental model, in experimentation, sensor can experience the pressure signal of the internal diverse location of model.In embodiments of the present invention, pressure sensor device 802 can include 49 pressure sensing cells 901.
Demarcate unit 902, for storing the transformational relation information between pressure signal and voltage signal, before experiment, first have to suppress with caliberating device and demarcate.The purpose suppressed is to ensure that each pressure sensing cells 901 normally works；The purpose demarcated determines that the transformational relation of pressure signal and voltage signal.
Voltage conversion unit 903, for being converted to described voltage signal by described pressure signal and exporting.
The multilateral well experimental system that the embodiment of the present invention provides simulates oil reservoir effectively, uses pressure capsule system to be successfully realized the real-time measurement of multilateral well nearly well pressure field distribution, and the pressure distribution recorded is more accurate.For studying the pressure field distribution around multilateral well, thus explore bottom water coning position and delay the approaches and methods of bottom water coning, and providing foundation for science exploitation multilateral well bottom water reservoir.
Data processing equipment is used to dock with pressure sensor device, can be with timely monitor model inside measuring point pressure；Show nearly well pressure field pattern, and real-time snap shot；Gather the data Auto-Memory obtained.The process of the nearly well pressure data to multilateral well of stimulating the menstrual flow obtains its nearly well pressure scattergram, and then obtains oil-water two-phase flow rule and rule of waterflooding.Substantially increasing conventional efficient, for later larger logistics organizations, the simulation of more complicated reservoir condition is had laid a good foundation.
Embodiment three
A kind of multilateral well experimental model limit Fluid Dynamics device, described limit Fluid Dynamics device is arranged on the inwall of described experimental model, described limit Fluid Dynamics device is the ring pipe of parcel gauze, a diameter of 4mm of described ring pipe, on described ring pipe all be dispersed with multiple apopore, a diameter of 0.5mm of described apopore.
As it is shown in figure 5, limit Fluid Dynamics device 404 is arranged on the internal face of experimental model 500, limit Fluid Dynamics device 404 is the bored tube of annular, wherein aperture is uniformly distributed, tubule surface parcel gauze, the diameter of ring pipe can be 4mm, and the diameter of apopore can be 0.5mm.In experimentation, can be with opposite side Fluid Dynamics device 404 water filling, it is ensured that the uniform water outlet of each aperture, thus realize simulating limit water.
The multilateral well experimental model limit Fluid Dynamics device that the embodiment of the present invention provides, effectively simulate oil reservoir, limit, bottom water are on multilateral well production capacity and the impact of nearly well pressure field distribution, make simulation closer to multiple different boundary such as the bottom water in true reservoir media, Bian Shui, closings, thus obtain the impact on oil well productivity of the different boundary conditions.
Embodiment four
Figure 10 is a kind of multilateral well experimental model back-up sand method flow diagram that the embodiment of the present invention provides, and as shown in Figure 10, described back-up sand method comprises the following steps:
S601, mixs homogeneously fine sand according to the ratio of 4: 1 with clay；
S602, uses the dry method filled out insert in experimental model by mixed fine sand and clay mixture and be compacted；
S603, is filled to water saturation to described experimental model；
S604, uses white oil saturated to oil to described experimental model expelling water.
In embodiments of the present invention, experiment sand is made into simulated formation by fine sand (200 mesh) and clay mixing, and the fine sand of different proportion can get different permeabilities from the mixture of clay.In this technique, being 4:1 through lot of experiment validation fine sand and clay optimum mixture ratio example, the permeability of experiment sand is 33 × 10-3μm2。
In experimentation, first have to a fine sand and mix homogeneously according to optimal proportion with clay, then use the dry method filled out to carry out back-up sand, will test in sand charging apparatus, and be compacted.In order to make its compaction preferable, obtaining relatively low permeability, the method use successively back-up sand in this technology, being successively compacted carries out filling.The work of saturation water is carried out after back-up sand, saturated to oil with white oil (when 25 DEG C, white oil viscosity the is 115mPa s) driven water-replacing of particular viscosity the most again.The method utilize clay water-swellable performance can the sandpack column of relatively low-permeability, and saturated oils method can form irreducible water, more approximates true oil reservoir.
In embodiments of the present invention, experimental model internal face is coated with an anti-water breakthrough coating, anti-water breakthrough coating is mixed by low molecule pa resin and epoxy resin, and described low molecule pa resin and the ratio of epoxy resin are 3: 5, and the surface of anti-water breakthrough coating can cover one layer of fine sand.
A kind of multilateral well experimental model back-up sand method that the embodiment of the present invention provides uses special back-up sand and saturation process to make the sandpack column of relatively low-permeability, makes simulation more approach oil reservoir truth, and the success for experiment is laid a good foundation.
Embodiment five
As it is shown in fig. 7, anti-water breakthrough coating is covered on the internal face of multilateral well experimental model, anti-water breakthrough coating is mixed by low molecule pa resin and epoxy resin, and described low molecule pa resin and the ratio of epoxy resin are 3: 5.
In embodiments of the present invention, due to the smooth meeting of model wall cause water in displacement process prolong hydraulically smooth surface alter into, make multilateral well shift to an earlier date water breakthrough, moisture content steeply rises, and have impact on experimental result.Therefore in view of the impact of " water breakthrough ", use epoxy resin that hydraulically smooth surface is processed, increase the roughness of wall.First allocate epoxy resin, low molecule pa resin and epoxy resin are mixed in proportion at 3: 5.Then hydraulically smooth surface is carried out uniform application, then covers fine sand on its surface, finally carry out drying and processing, to increase the roughness of wall.(noting: the allotment of epoxy resin, the process of smearing need band canister respirator).
The anti-water breakthrough coating that the embodiment of the present invention provides effectively prevent " water breakthrough ", makes simulation more approach oil reservoir truth, and the success for experiment is laid a good foundation.
Embodiment six
Figure 11 is a kind of multilateral well experimental model anti-water breakthrough method flow diagram that the embodiment of the present invention provides, and as shown in figure 11, described method comprises the following steps:
S701, by low molecule pa resin and epoxy resin according to 3: 5 ratio mix homogeneously；
S702, is applied in mixed low molecule pa resin and epoxy resin composition on the internal face of experimental model, forms anti-water breakthrough coating；
S703, at one layer of fine sand of surface uniform fold of described anti-water breakthrough coating；
S704, dries the anti-water breakthrough coating covering fine sand.
In embodiments of the present invention, due to the smooth meeting of model wall cause water in displacement process prolong hydraulically smooth surface alter into, make multilateral well shift to an earlier date water breakthrough, moisture content steeply rises, and have impact on experimental result.Therefore in view of the impact of " water breakthrough ", use epoxy resin that hydraulically smooth surface is processed, increase the roughness of wall.First allocate epoxy resin, low molecule pa resin and epoxy resin are mixed in proportion at 3: 5.Then hydraulically smooth surface is carried out uniform application, then covers fine sand on its surface, finally carry out drying and processing, to increase the roughness of wall.(noting: the allotment of epoxy resin, the process of smearing need band canister respirator).
The multilateral well experimental model anti-water breakthrough method that the embodiment of the present invention provides effectively prevent " water breakthrough ", makes simulation more approach oil reservoir truth, and the success for experiment is laid a good foundation.
A kind of multilateral well experimental model, system and the back-up sand method that the embodiment of the present invention provides, has the advantage that
Effectively simulating oil reservoir, use pressure capsule system to be successfully realized the real-time measurement of multilateral well nearly well pressure field distribution, the pressure distribution recorded is more accurate.For studying the pressure field distribution around multilateral well, thus explore bottom water coning position and delay the approaches and methods of bottom water coning, and providing foundation for science exploitation multilateral well bottom water reservoir.
Effectively simulate limit, bottom water to multilateral well production capacity and the impact of nearly well pressure field distribution, make simulation closer to multiple different boundary such as the bottom water in true reservoir media, Bian Shui, closings, thus obtain the impact on oil well productivity of the different boundary conditions.
Effectively simulate multiple-limb, many well type multiple-limb well capacity and enter well pressure field distribution, being appreciated that multilateral well is exploited the impact of different boundary oil reservoir by the geometrical factor of multilateral well, provide theoretical foundation for multilateral well well type optimization.
Data processing equipment is used to dock with pressure sensor device, can be with timely monitor model inside measuring point pressure；Show nearly well pressure field pattern, and real-time snap shot；Gather the data Auto-Memory obtained.The process of the nearly well pressure data to multilateral well of stimulating the menstrual flow obtains its nearly well pressure scattergram, and then obtains oil-water two-phase flow rule and rule of waterflooding.Substantially increasing conventional efficient, for later larger logistics organizations, the simulation of more complicated reservoir condition is had laid a good foundation.
Effectively prevent " water breakthrough ", and use special back-up sand and saturation process to make the sandpack column of relatively low-permeability, make simulation more approach oil reservoir truth, the success for experiment is laid a good foundation.
Above-described detailed description of the invention; the purpose of the present invention, technical scheme and beneficial effect are further described; it is it should be understood that; the foregoing is only the detailed description of the invention of the present invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the present invention.
Claims (10)
- null1. a multilateral well experimental model，It is characterized in that，Described multilateral well experimental model is a square container，The high pressure of 12MPa can be born inside it，Experiment sand is filled on the top of described experimental model，The bottom of described experimental model is used for filling bottom water，A bottom water diffuser plate it is provided with between described two parts up and down，It is provided with warp layer net between described bottom water diffuser plate and top，Multiple limits Fluid Dynamics unit it is provided with on described experimental model inwall，A multilateral well model it is provided with in described experimental model top，Described multilateral well model is multi-branched horizontal well model，Multi-branched horizontal well model is positioned at above the pressure sensing cells of pressure sensor device at 2cm，The toe-end of the described multi-branched horizontal well model inwall 5cm away from described experimental model，The heel end of described multi-branched horizontal well model is connected with the wall of described experimental model，Described experimental model can realize the real-time measurement of multilateral well nearly well pressure field distribution；Described experimental model internal face is coated with an anti-water breakthrough coating.
- Multilateral well experimental model the most according to claim 1, it is characterized in that, described limit Fluid Dynamics unit is the ring pipe of parcel gauze, a diameter of 4mm of described ring pipe, multiple apopore it is uniform-distribution with, a diameter of 0.5mm of described apopore on described ring pipe.
- Multilateral well experimental model the most according to claim 1, it is characterised in that described multi-branched horizontal well model includes main hole and at least one branch, described distribution is at the homonymy of main hole or heteropleural.
- Multilateral well experimental model the most according to claim 1, it is characterised in that each branch of described multi-branched horizontal well model includes with the angle of main hole: 15 °, 30 °, 45 °, 60 °, 75 ° and 90 °.
- Multilateral well experimental model the most according to claim 1, it is characterised in that described experiment sand is made into by fine sand and clay mixing.
- Multilateral well experimental model the most according to claim 5, it is characterised in that described fine sand and the ratio of clay are 4:1, the permeability of described experiment sand is 33 × 10-3μm2。
- Multilateral well experimental model the most according to claim 1, it is characterised in that described anti-water breakthrough coating is mixed by low molecule pa resin and epoxy resin, and described low molecule pa resin and the ratio of epoxy resin are 3:5.
- Multilateral well experimental model the most according to claim 7, it is characterised in that the surface of described anti-water breakthrough coating is coated with one layer of fine sand.
- 9. a multilateral well experimental system, it is characterised in that described multilateral well experimental system includes:Multilateral well experimental model as described in claim 1-8 any one；Pressure sensor device, is connected with described experimental model, the pressure of diverse location in sensing experimental model, generates voltage signal；Data processing equipment, is connected with described pressure sensor device, is used for receiving voltage signal, generates analog result data.
- Multilateral well experimental system the most according to claim 9, it is characterised in that described pressure sensor device includes:Pressure sensing cells, the pressure signal of diverse location in gathering experimental model；Demarcate unit, for storing the transformational relation information between pressure signal and voltage signal；Voltage conversion unit, for being converted to described voltage signal by described pressure signal and exporting.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180178.XA CN102704911B (en) | 2012-06-01 | 2012-06-01 | A kind of multilateral well experimental model, system and back-up sand method |
| CN201610693430.5A CN106223928B (en) | 2012-06-01 | 2012-06-01 | Sand filling method of multilateral well experimental model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180178.XA CN102704911B (en) | 2012-06-01 | 2012-06-01 | A kind of multilateral well experimental model, system and back-up sand method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610693430.5A Division CN106223928B (en) | 2012-06-01 | 2012-06-01 | Sand filling method of multilateral well experimental model |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102704911A CN102704911A (en) | 2012-10-03 |
| CN102704911B true CN102704911B (en) | 2016-08-03 |
Family
ID=46897936
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210180178.XA Active CN102704911B (en) | 2012-06-01 | 2012-06-01 | A kind of multilateral well experimental model, system and back-up sand method |
| CN201610693430.5A Active CN106223928B (en) | 2012-06-01 | 2012-06-01 | Sand filling method of multilateral well experimental model |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610693430.5A Active CN106223928B (en) | 2012-06-01 | 2012-06-01 | Sand filling method of multilateral well experimental model |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN102704911B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104254B (en) * | 2013-01-24 | 2015-05-20 | 西南石油大学 | Multifunctional oil reservoir simulation experiment device and experiment method thereof |
| CN103247215B (en) * | 2013-04-12 | 2015-08-05 | 中国石油天然气股份有限公司 | Low-permeability oil reservoir multi-layer commingled production physical simulation system and method |
| CN103397872B (en) * | 2013-08-06 | 2016-07-13 | 中国海洋石油总公司 | The pit shaft analog of racemosus water conservancy diversion moderate leading well |
| CN103967458B (en) * | 2014-02-25 | 2016-03-23 | 中国海洋石油总公司 | A kind of sand control section water drive method |
| CN104196527B (en) * | 2014-08-13 | 2017-06-16 | 中国石油大学(北京) | Multilateral well productivity simulation system and multilateral well productivity simulation experimental technique |
| CN105971569B (en) * | 2016-05-17 | 2018-08-03 | 东北石油大学 | A kind of indoor experimental apparatus of simulation herring-bone form multi-branched horizontal well |
| CN106285586B (en) * | 2016-09-30 | 2018-12-11 | 东北石油大学 | A kind of apparatus and method of simulation set damage process |
| CN106869914B (en) * | 2017-03-09 | 2020-07-28 | 长江大学 | Production capacity prediction method for coupling seepage in oil layer with flow in shaft |
| CN107705687B (en) * | 2017-10-25 | 2023-09-15 | 中国石油大学(北京) | Back inclined trap observation experimental device and application thereof |
| CN108979607B (en) * | 2018-07-10 | 2020-09-04 | 中国海洋石油集团有限公司 | High-temperature-resistant high-salt sand filling pipe with internal ring cementation and anti-channeling |
| CN112302592B (en) * | 2019-07-30 | 2023-04-07 | 中国石油天然气股份有限公司 | Simulation experiment equipment for water displacement of sand body of point dam of meandering river |
| CN111058812B (en) * | 2019-12-30 | 2024-05-28 | 中国地质大学（武汉） | Experimental device for simulating side water driven oil extraction of collapse and accumulation reservoir |
| CN112780241B (en) * | 2021-03-05 | 2022-03-11 | 西南石油大学 | Method for partitioning quantitative saturated bound water of planar heterogeneous large flat plate model |
| CN113266345A (en) * | 2021-06-28 | 2021-08-17 | 中国石油化工股份有限公司 | Reservoir simulation unit and gas dissolution distribution evaluation device and evaluation method thereof |
| CN113719261A (en) * | 2021-09-27 | 2021-11-30 | 北京红蓝黑能源科技有限公司 | Method for improving economic benefit of single well by exploiting oil gas through bottom water steam flooding |
| CN116838335B (en) * | 2023-07-10 | 2024-08-30 | 中国石油大学(北京) | Multiphase seepage three-dimensional visual simulation device and method for well with complex structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476458A (en) * | 2008-12-03 | 2009-07-08 | 刘其成 | Oil pool development simulation system, oil pool model body and its data processing method |
| CN101800000A (en) * | 2009-10-30 | 2010-08-11 | 中国石油天然气股份有限公司 | Multi-angle horizontal branch well natural gas exploitation simulator |
| CN102022112A (en) * | 2010-11-04 | 2011-04-20 | 中国石油大学(华东) | Intelligent oil well simulation experiment system and working method |
| CN102434151A (en) * | 2011-12-19 | 2012-05-02 | 中国海洋石油总公司 | Bottom-water coning dynamic simulation experiment device in bottom-water oil reservoir development and simulation system |
| CN202937246U (en) * | 2012-06-01 | 2013-05-15 | 中国石油大学(北京) | Multilateral well experimental model and edge water stimulation device and multilateral well experimental system thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7091460B2 (en) * | 2004-03-15 | 2006-08-15 | Dwight Eric Kinzer | In situ processing of hydrocarbon-bearing formations with variable frequency automated capacitive radio frequency dielectric heating |
| CN101793137B (en) * | 2010-01-29 | 2013-01-02 | 西南石油大学 | Oil-water displacement efficiency experimental method of longitudinal and planar nonhomogeneous slab models |
| CN101798921A (en) * | 2010-02-21 | 2010-08-11 | 大庆油田有限责任公司 | Corestone manufacture method |
| CN101831924B (en) * | 2010-04-21 | 2012-11-28 | 上海交通大学 | Simulator for blocking groundwater seepage by underground structure |
| CN102062742B (en) * | 2010-12-15 | 2012-09-05 | 大连理工大学 | Sand-filling type clamp fastener for nuclear magnetic resonance imaging |
-
2012
- 2012-06-01 CN CN201210180178.XA patent/CN102704911B/en active Active
- 2012-06-01 CN CN201610693430.5A patent/CN106223928B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476458A (en) * | 2008-12-03 | 2009-07-08 | 刘其成 | Oil pool development simulation system, oil pool model body and its data processing method |
| CN101800000A (en) * | 2009-10-30 | 2010-08-11 | 中国石油天然气股份有限公司 | Multi-angle horizontal branch well natural gas exploitation simulator |
| CN102022112A (en) * | 2010-11-04 | 2011-04-20 | 中国石油大学(华东) | Intelligent oil well simulation experiment system and working method |
| CN102434151A (en) * | 2011-12-19 | 2012-05-02 | 中国海洋石油总公司 | Bottom-water coning dynamic simulation experiment device in bottom-water oil reservoir development and simulation system |
| CN202937246U (en) * | 2012-06-01 | 2013-05-15 | 中国石油大学(北京) | Multilateral well experimental model and edge water stimulation device and multilateral well experimental system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102704911A (en) | 2012-10-03 |
| CN106223928B (en) | 2020-01-03 |
| CN106223928A (en) | 2016-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102704911B (en) | A kind of multilateral well experimental model, system and back-up sand method | |
| CN107121359B (en) | It shakes out containing hydrate sediment-mechanics parameter coupling process simulator and method | |
| CN102518421B (en) | Physical simulation visualization experimental device and forming method thereof | |
| CN102720476B (en) | O-shaped well physical simulation experiment device | |
| CN105756674B (en) | Fracture-matrix coupling flow damage evaluation device and method for simulating formation conditions | |
| CN106324226B (en) | Monitor seepage action of ground water, sedimentation perfusion one laboratory testing rig and method | |
| Liu et al. | Effects of intersection and dead-end of fractures on nonlinear flow and particle transport in rock fracture networks | |
| CN102323197B (en) | Device for measuring soil water movement and soil structure and method | |
| CN106153478B (en) | A kind of impact type consolidation object intensity measuring device and its method | |
| CN109827848B (en) | Oil and gas reservoir fracturing fracture expansion simulation dynamic monitoring system and method | |
| CN106437644A (en) | Large bottom water sandstone oil reservoir development physical simulation experiment device and working method thereof | |
| CN106593384B (en) | Hydraulic fracturing physical simulating method with spiral perforated horizontal wells | |
| CN104975828B (en) | Device and preparation method that achievable mixed phase selection of additives and rock core mixed phase drive | |
| CN109424350A (en) | The system and method for proppant transported simulation in complex fracture | |
| CN202937246U (en) | Multilateral well experimental model and edge water stimulation device and multilateral well experimental system thereof | |
| CN112098155B (en) | Oil reservoir oil-water-rock reaction experimental device and method and sampling position determination method | |
| CN103792333A (en) | Real-time tester for multi-environment simulated rock disaggregation process | |
| CN108571313A (en) | A kind of down-hole casing deformation simulator and method | |
| CN206132761U (en) | Monitoring groundwater seepage flow, subside fill integrative indoor test device | |
| CN203769767U (en) | Horizontal-well physical simulation experiment device | |
| CN202417477U (en) | Physical simulation visual experimental device | |
| CN106777515A (en) | A kind of method based on core experiment analysis tight gas wells production capacity | |
| Yang et al. | Effects of fracture characteristics on spontaneous imbibition in a tight reservoir | |
| CN110456028A (en) | It is a kind of can be with the grouting test device and method of independent control three-dimensional stress state | |
| CN105929461A (en) | Dynamic and static rock mechanical parameter correction system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |